Speaker
Zi-Yan Yuwen
(Institute of Theoretical Physics, Chinese Academy of Sciences)
Description
Primordial black holes (PBHs) may form before cosmological first-order phase transitions, leading to inevitable collisions between PBHs and bubble walls. In this Letter, we have simulated for the first time the co-evolution of an expanding scalar wall passing through a black hole with full numerical relativity. This black hole-bubble wall collision yields multiple far-reaching phenomena including the PBH mass growth, gravitational wave radiations, and momentum recoil that endows PBHs with additional velocities, approximately doubling the formation rate for PBH binaries and hence strengthening the observational constraints on the PBH abundances.
Primary authors
Zi-Yan Yuwen
(Institute of Theoretical Physics, Chinese Academy of Sciences)
Dr
Cristian Joana
(Institute of Theoretical Physics, Chinese Academy of Sciences)
Shao-Jiang Wang
(Institute of Theoretical Physics, Chinese Academy of Sciences)
Prof.
Rong-Gen Cai
(Institute of Theoretical Physics, Chinese Academy of Sciences)
